_Hypochnus_ without conidia.--_Tomentella_ with conidiophores; growing on wood or earth.--_Exobasidium vaccinii_ (Fig. 163), a parasite on _Vaccinium_, _Andromeda_, _Arctostaphylos_, and _Rhododendron_, forms flaky-powdery, white or red coverings and may cause hypertrophy of the parts attacked. _E. warmingii_ is parasitic on _Saxifraga_; _E. lauri_ causes outgrowths on the stem of _Laurus canariensis_ as long as a finger, which formerly were regarded as aerial roots.--_Corticium_ forms membranous to leathery layers or crusts; _C. quercinum_ on wood and bark, particularly Oak, is flesh-coloured; _C. cæruleum_ has a blue hymenium; _C. giganteum_ on the bark of fallen Pine-trees. Order 2. =Clavariaceæ.= The hymenium is situated on a stroma, and either completely _covers the smooth surface_ of the more or less fleshy _gymnocarpic fruit-body_, or is confined to a tolerably well defined _upper portion_ of it (_Typhula_). Paraphyses absent. The vertical, white, yellow, or red fruit-bodies are roundish or club-like, undivided or richly branched (Fig. 125). Generally on the ground in woods, seldom on tree-stems, etc. [Illustration: FIG. 164.--_Clavaria coralloides_ (nat. size).] GENERA: _Clavaria_, generally large Fungi with thick, round branches. _C. botrytis_ has a very thick, tubercular stem with numerous short, flesh-coloured branches: it has an agreeable taste. _C. coralloides_ has a brittle, richly-branched fruit-body (Fig. 164); basidia with two large spores. _C. pistillaris_ consists of a single, undivided club of a yellowish-white colour.--_Sparassis_ has compressed, leaf-like, curled branches; _S. crispa_ has fruit-bodies as large as a white cabbage-head, with an agreeable taste.--_Typhula_ and _Pistillaria_ are small Fungi with filamentous stalks, terminating in a small club. The fruit-bodies of the former often arise from a small, spheroid sclerotium; the latter is distinguished by the basidia bearing only two spores. Order 3. =Thelephoraceæ.= The hymenium is placed on a stroma and _covers the smooth surface_ of the leathery _hemiangiocarpic fruit-body_, generally _on its under side_. The edge of the stroma, which bounds the hymenium, is sometimes especially developed (_Stereum_). Saprophytes.